The line comes from Ivan Reitman's 1984 comedy Ghostbusters, where the team's firehouse alarm signals a real call and the crew scrambles into action. The ringing bell became one of the film's most recognisable audio cues, alongside the siren of the Ecto-1. Clips of the moment circulated for years in fan edits and Halloween videos before soundboards isolated the bell and shout as a standalone reaction. It remains popular because it instantly references ghost hunting while working as a general celebration sound.